Darrellll Posted August 16, 2023 Share Posted August 16, 2023 After replacing the maf air sensor, the engine control unit, and still having the engine management light on and the vehicle in limp mode, I have been advised that the problem lies with the turbo. Quote Link to comment Share on other sites More sharing options...
br1anuk Posted August 16, 2023 Share Posted August 16, 2023 Do you have any error messages? In addition, a quick check for leaks would be the boost hoses leading to the intercooler. Quote Link to comment Share on other sites More sharing options...
Darrellll Posted August 16, 2023 Author Share Posted August 16, 2023 Thank you so much for your help; I plan to have them inspected today. I'll need to get the relevant codes; are the hoses or whatever else needs fixing easily accessible? Thanks Quote Link to comment Share on other sites More sharing options...
br1anuk Posted August 16, 2023 Share Posted August 16, 2023 Should be simple enough from above; simply check for leaks in the hoses with a hand probe. Quote Link to comment Share on other sites More sharing options...
John278 Posted August 16, 2023 Share Posted August 16, 2023 It's intriguing to learn the reasoning behind the engine ECU swap. We need the original error codes, so please send them along. Quote Link to comment Share on other sites More sharing options...
Darrellll Posted August 16, 2023 Author Share Posted August 16, 2023 Many thanks Quote Link to comment Share on other sites More sharing options...
Darrellll Posted August 16, 2023 Author Share Posted August 16, 2023 One technician suggested that I try replacing the maf sensor, and when it didn't work, I went to a second mechanic who told me the same thing. Then you must have been instructed to use turbo. So, we've had the arms examined, and everything seems OK there; the next step, courtesy to the guy on this site, is to check the pipes, but then we'll have to pay for yet another diagnostic to retrieve the codes and (we assume) reset the vehicle. Thanks Quote Link to comment Share on other sites More sharing options...
br1anuk Posted August 16, 2023 Share Posted August 16, 2023 Probably not the ECU or the MAF, but the exhaust back pressure sensor. The exhaust back pressure sensor will fool many technicians into believing the turbo actuator is at fault, when in fact it isn't, and this is just one example of how code readers may lead to more complications in the car's operation. Instead of throwing away cash on a whim, you could invest in a Mercedes Star session. A faulty ECU or maf is conceivable but unlikely to be the cause. Quote Link to comment Share on other sites More sharing options...
Darrellll Posted August 16, 2023 Author Share Posted August 16, 2023 I appreciate your advice and will have my husband check the pipes, but I will definitely schedule another appointment for my vehicle, this time with a Mercedes service center. The situation has worsened since some kind soul drove into my parked vehicle, but I have faith that things will eventually improve. Again, I appreciate your assistance. Quote Link to comment Share on other sites More sharing options...
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